Kidde 910 User Manual page 3

The closed door may prevent an alarm not located in that room
from waking the sleeper.
• Smoke, heat, and combustion products rise to the ceiling and
spread horizontally. Mounting the smoke alarm on the ceiling in
the center of the room places it closest to all points in the room.
Ceiling mounting is preferred in ordinary residential
construction.
• For mobile home installation, select locations carefully to avoid
thermal barriers that may form at the ceiling. For more details, see
MOBILE HOME INSTALLATION below.
• When mounting an alarm on the ceiling, locate it at a minimum of
4" (10 cm) from the side wall (see figure 1).
• When mounting the alarm on the wall, use an inside wall with
the top edge of the alarm at a minimum of 4" (10 cm) and a
maximum of 12" (30.5 cm) below the ceiling (see figure 1).
• Put smoke alarms at both ends of a bedroom hallway or large
room if the hallway or room is more than 30 feet (9.1 m) long.
CEILING
BEST
CEILING
HERE
BEST
HERE
ACCEPTABLE
HERE
ACCEPTABLE
4"
(102 mm)
SINGLE FLOOR PLAN
SINGLE FLOOR PLAN
BEDROOM KITCHEN
BEDROOM KITCHEN BEDROOM
3'
(0.9 m)
LIVING ROOM
LIVING ROOM
NOT
IN THIS
AREA
ANYWHERE
IN THIS
AREA
CEILING
BEST
HERE
ACCEPTABLE
SINGLE FLOOR PLAN
BEDROOM KITCHEN
4"
(10 cm)
MINIMUM
DEAD AIR
SPACE
(10 cm)
MINIMUM
LIVING ROOM
4"
(10 cm)
NEVER
MINIMUM
HERE
DEAD AIR
SPACE
4"
(10 cm)
MINIMUM
NEVER
HERE
12"
(30.5 cm)
MAXIMUM
HERE
NOT
SIDE
IN THIS
WALL
AREA
SIDE
WALL
FIGURE 1
ANYWHERE
IN THIS
AREA
MULTIPLE
FLOOR PLAN
FLOOR PLAN
BEDROOM BEDROOM
BEDROOM
3'
(0.9 m)
BEDROOM
BEDROOM
BEDROOM
LIVING
ROOM
BEDROOM
LIVING
ROOM
BASEMENT
BASEMENT
FIGURE 2
ANYWHERE
4"
(10 cm)
MINIMUM
DEAD AIR
SPACE
NEVER
HERE
HERE
BEDROOM BEDROOM
4"
4"
BEDROOM
(102 mm)
12"
(30.5 cm)
MAXIMUM
MULTIPLE
HALL BEDROOM
HALL BEDROOM
KITCHEN
KITCHEN
NOT
IN THIS
AREA
4"
(10 cm)
MINIMUM
SINGLE FLOOR PLAN
12"
(30.5 cm)
MAXIMUM
BEDROOM
SIDE LIVING ROOM
WALL
MULTIPLE
FLOOR PLAN
BEDROOM HALL BEDROOM
LIVING KITCHEN
ROOM
BASEMENT
3'
(0.9 m) (0.9 m)
NOT
IN THIS
AREA
ANYWHERE
IN THIS AREA
3'
(0.9 m)
FIGURE 3
CEILING
BEST
HERE
ACCEPTABLE
HERE
KITCHEN BEDROOM
BEDROO
NOT
IN THIS
AREA
ANYWHERE
IN THIS
AREA
3'
4"
(102 mm)
NEV
HE
BE